Drilling anti-deviation device for geotechnical engineering exploration and using method

Abstract

The invention discloses a drilling anti-deviation device for geotechnical engineering exploration and a using method. The device comprises a drill pipe, and the drill pipe is provided with a deviationrectifying device capable of moving along with the drill pipe. According to the drilling anti-deviation device for geotechnical engineering exploration and the using method, a deviation rectifying disc and the drill pipe are connected in a mode similar to threaded connection, and the deviation rectifying disc rotates along with the drill pipe in the drilling process of the drill pipe through limitation of threads, so that the large pressure generated by the inclination trend is transferred to the deviation rectifying disc, friction is reduced through the rotating connection of the deviation rectifying disc and a guiding limiting wheel, the service life of deviation rectifying of the deviation rectifying disc is prolonged, and the deviation rectifying effect cannot be affected after long-term use.

Description

technical field [0001] The invention relates to the technical field of drilling auxiliary devices, in particular to a drilling deviation prevention device for geotechnical engineering investigation and a use method thereof. Background technique [0002] At present, geotechnical engineering survey is the activity of identifying, analyzing and evaluating the geological and environmental characteristics of the construction site and geotechnical engineering conditions to prepare survey documents. It is very important for building construction projects. With the development of economy, the speed of urbanization is accelerating With more and more building constructions, the demand for geotechnical engineering surveys is gradually increasing, and its equipment is constantly being updated and improved. [0003] During exploration operations, it is easy for the drill bit to deviate, especially when drilling on some solid slopes, the drill bit will be subject to lateral force, the dri...

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Problems solved by technology

[0003] During exploration operations, it is easy for the drill bit to deviate, especially when drilling on some solid slopes, the drill bit will be subject to lateral force, the drill pipe is longer, and the deviation of the drill will seriously affect the drill pipe on the drill The service life of the existing correction device is to correct the horizontal position before drilling, and limit the deviation of the drill pipe through an annular ring, but because of the deflection of the drill pipe, a certain position of the annular ring will be affected. The friction force is relatively large, which not only affects the life of the drill pipe but also makes the error of the annular ring larger after repeated use, and cannot effectively prevent deviation while drilling on inclined planes

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